This looks like it would be a fun accessory for those new Zastava AK pistols, I actually like the looks of this more than the ones that fire from inside the suitcase. I also think the ones that fire inside the container might be NFA items, but I am not 100% on that.

Unless they’ve changed their stance I think the BATFE considers guns that will fire from inside briefcases AOWs because they function as disguised weapons. I think you’d only register the actual firearm so at that point I would think you could add a folding stock too. You’d probably want to ask first. But how cool would that be?